<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="login" method="post">
    用户名:<input type="text" name="username">
    密码:<input type="password" name="password">
    身份:<input type="text" name="role">
    验证码:<input type="text" name="verify_number">
    <img src="verify">
    <input type="submit" value="登陆">
</form>
</body>
</html>